Tom Tom and Microsofts Linux patent lock-down ..

'Microsoft's got a long history of licensing its File Allocation
Table/Long File Name (FAT LFN) with companies in the car navigation
space and that have specifically been using Linux and open source'

'Microsoft's corporate vice president and deputy general counsel of
intellectual property and licensing Horacio Gutierrez said 18 companies
had signed up, including Kenwood, Alpine, and Pioneer'

'Microsoft is eroding Linux and open source and slowing their
development. A deal with Microsoft prevents GPL'd code from returning to
the ecosystem whence it came, with any improvements or updates, as
companies that do patent licensing deals with Microsoft must keep it
in-house ...'